"You can take out your memory note anytime. Please improve yourself with this strategy of your own."

Haven't you ever wanted to use your time for your purpose, when you are free by chance, on the train, in waiting for your friends to come, or in the hospital? Then you want to learn still more things by heart for some qualifying tests and so on, don't you? But even if you have free time, you will not have your memory note with you, I...